Sturgeon hybrids that tolerate warm saltwater?

[LadAShark]

Was wondering which sturgeon hybrids (or nonhybrids) would be capable of living in warm saltwater 20-26 sg. To make it a little more difficult, I'd prefer the species be under 5 feet max size, or only reach under that size in captivity (as there are some sturgeons that grow larger than that in the wild while all individuals of that species are smaller than that in captivity).

One I was able to find was the shortnose sturgeon, but that's currently endangered, and obtaining one would be incredibly difficult.

 

[Moontanman]

Many sturgeon move between fresh and marine environments, shortnose would be the smallest I know of...

 

[LadAShark]

Many sturgeon move between fresh and marine environments, shortnose would be the smallest I know of...

Yes, that was what I was thinking of, alongside sterlet which stays relatively small.

Shovelnose seems to live in freshwater outright though.

Those are the only ones I was able to really find.

 

[spotfin]

Yeah, shortnose is the only one that comes to mind. They can/do migrate between river systems, and can tolerate salt and warmer water temps. Long term in saltwater I'm not sure how they would do.

 

[LadAShark]

Woops, accidental post.

 

[Erno]

Russian sturgeon , can live in seawater